I set this up for my daughter on her MacBook, and she quite enjoys the custom cursors. It definitely requires some technical expertise even after installing the app though, as it doesn't ship with extra cursors; you have to configure them yourself.
Did you see his update below that paragraph? He admits that he had to update everything, and his pages are not currently a time capsule. It basically negates his entire message.
FWIW, the screenshot of the page doesn't actually look like how the page looks like currently. One could handwave and say that's intentional, but IMHO it looks as though the styles are broken (in particular the text in really small font and the yellow highlighted text)
I think the moral of the story here is that if you're going to be advocating for HTML over a SSG, then perhaps it would make sense to invest a bit of time on a styleguide page, or take a bit more effort to leverage default styles (in the style of http://motherfuckingwebsite.com/), or just commit to inline styles to lock down the individualistic look of each page (if that's what they want). Being wishy-washy about style management over time is not going to age well.
I'd say Google and Algolia are the only companies with the resources and know-how in search that can even think of this. And probably even they shouldn't.
As a developer, the Touch Bar as a whole is trash. I want to type without looking at the keyboard, and now I suddenly always have to look at the keyboard.
Accidentally pressing the escape key is just one of many issues I have with that "feature".